they are called savannah's and theyve only been around for 20 or 30 years.
from what ive read, they have doglike personalities, will play fetch, and dont mind being walked on a leash.
i havent heard anythng about weird diseases or anything, but i prolly wouldnt take one to the regular vet.
f1's are enormous, but the further you breed them, the smaller and less serval-like they are.
they are really hard to breed aparently, cause it takes a lot of trial and error to get the first litter, and the males are sterile till f4 or so.
so, they are super expensive, 1500 for f3/f4 and up to 20,000 USD for choice f1 males.
ill have to wait till i win the lottery.